Since mount and unmount are not done on each copy request, its overhead
should not be considered as the threshold for doing inter-server copy.
The threshold used to determine sync or async copy is also used to decide
whether copy is done with inter-server copy or generic copy.
Signed-off-by: Dai Ngo <dai.ngo@xxxxxxxxxx>
---
fs/nfs/nfs4file.c | 10 ++++------
1 file changed, 4 insertions(+), 6 deletions(-)
diff --git a/fs/nfs/nfs4file.c b/fs/nfs/nfs4file.c
index 441a2fa073c8..67ca798a1a79 100644
--- a/fs/nfs/nfs4file.c
+++ b/fs/nfs/nfs4file.c
@@ -158,13 +158,11 @@ static ssize_t __nfs4_copy_file_range(struct file *file_in, loff_t pos_in,
sync = true;
retry:
if (!nfs42_files_from_same_server(file_in, file_out)) {
- /* for inter copy, if copy size if smaller than 12 RPC
- * payloads, fallback to traditional copy. There are
- * 14 RPCs during an NFSv4.x mount between source/dest
- * servers.
+ /*
+ * for inter copy, if copy size is small enough
+ * for sync copy then fallback to traditional copy.
*/
- if (sync ||
- count <= 14 * NFS_SERVER(file_inode(file_in))->rsize)
+ if (sync)
return -EOPNOTSUPP;
cn_resp = kzalloc(sizeof(struct nfs42_copy_notify_res),
GFP_NOFS);
--
2.9.5
